Light curtain verification device

Abstract

The utility model relates to the technical field of light curtain inspection, disclose a kind of light curtain verification device, including conveying mechanism, the side of conveying mechanism is provided with first fence, the other side of conveying mechanism is provided with second fence, the inside of second fence is fixedly connected with light curtain transmitter, the inside of first fence is fixedly connected with light curtain receiver, the outside of first fence is provided with control switch, the bottom of air pump is fixedly connected with connecting air pipe, one end of connecting air pipe is fixedly connected with air cylinder, baffle is movably connected in the side of light curtain receiver, by operating the control switch of first fence outside staff, air pump starts, air cylinder drives piston rod to push baffle to move to the side of light curtain receiver, until baffle blocks the detection area of light curtain receiver, to observe whether conveying mechanism triggers emergency stop in time, facilitate staff to verify light curtain system outside fence.

Description

Technical Field

[0001] This utility model relates to the field of light curtain inspection technology, specifically a light curtain verification device. Background Technology

[0002] In fields such as industrial safety protection, public security, intelligent transportation, and logistics sorting, light curtain verification technology, with its characteristics of "non-contact detection, large-area coverage, and rapid response," has become an important means of achieving safety early warning, identity verification, and object recognition. Light curtain verification uses an emitter to emit infrared light or laser to form a dense beam array (light curtain), and a receiver receives the beam and analyzes the changes in the light signal to determine whether there is an object blocking the light, the location of the blockage, or the shape of the blockage. Its application scenarios cover multiple key links. In industrial production, light curtain verification can be used as a safety protection device for equipment such as punch presses and bending machines. When a human body accidentally enters a dangerous area, it can immediately trigger a shutdown to avoid workplace accidents.

[0003] In industrial production, especially in production lines involving conveying mechanisms, protective fences are usually installed to ensure personnel safety and prevent people from accidentally entering the operating area of ​​the conveying mechanism and getting injured. These fences are combined with light curtain systems to achieve safety protection. When the light curtain is blocked, it can trigger an emergency stop of the conveying mechanism.

[0004] However, existing technologies require verification of the effectiveness of the light curtain system before the conveyor mechanism is started. Traditional light curtain verification methods often require personnel to enter the protective fence and conduct tests by manually simulating obstruction. This operation is not only inefficient but also poses certain safety risks. If the light curtain system fails during the verification process, the conveyor mechanism may be started accidentally, causing injury to the personnel.

[0005] To address the aforementioned issues, we propose a light curtain verification device. Utility Model Content

[0006] To address the technical problem of existing systems where personnel need to enter the interior of protective fences to test light curtain systems, this invention provides a light curtain verification device.

[0007] This utility model is achieved using the following technical solution: a light curtain verification device, including a conveying mechanism, a first fence on one side of the conveying mechanism, and a second fence on the other side of the conveying mechanism. A light curtain transmitter is fixedly connected to the inner side of the second fence, and a light curtain receiver is fixedly connected to the inner side of the first fence. The positions of the light curtain transmitter and the light curtain receiver correspond to each other. A control switch is provided on the outer side of the first fence. The control switch is electrically connected to an air pump. A connecting air pipe is fixedly connected to the bottom of the air pump. A cylinder is fixedly connected to one end of the connecting air pipe. A piston rod is movably connected to one end of the cylinder. A baffle is fixedly connected to one end of the piston rod. The baffle is movably connected to one side of the light curtain receiver.

[0008] Preferably, a mounting bracket is fixedly connected to the inner side of the first fence, the cylinder is fixedly connected to one side of the mounting bracket, and one end of the piston rod passes through the interior of the mounting bracket.

[0009] Preferably, a fixing frame is fixedly connected to the outer side of the first fence, and the control switch is fixedly connected to one side of the fixing frame.

[0010] Preferably, one end of the baffle is fixedly connected to a guide rod, and one end of the guide rod is movably connected to the inside of the mounting frame.

[0011] Preferably, the other end of the guide rod is fixedly connected to a limiting block, which is located on one side of the mounting bracket.

[0012] Preferably, one end of the second fence is hinged to a gate.

[0013] Preferably, an alarm is mounted on top of the light curtain receiver.

[0014] Compared with the prior art, the beneficial effects of this utility model are: In use, this utility model allows staff to operate a control switch on the outside of the first fence. After the air pump starts, air is supplied to the cylinder through the connecting air pipe. The cylinder drives the piston rod to extend, and the piston rod pushes the baffle towards the light curtain receiver until the baffle blocks the detection area of ​​the light curtain receiver. This allows observation of whether the conveying mechanism triggers an emergency stop in time. If the stop is rapid and stable, it indicates that the light curtain system is functioning normally. If the system does not stop or the stop is delayed, it is necessary to check for faults in the light curtain transmitter, light curtain receiver, and control circuit. This allows staff to verify the light curtain system from outside the fence. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the first fence and the light curtain receiver of this utility model; Figure 3 This is a schematic diagram of the connection structure between the light curtain transmitter and the light curtain receiver of this utility model.

[0016] In the diagram: 1. Conveying mechanism; 2. First fence; 3. Second fence; 4. Light curtain transmitter; 5. Light curtain receiver; 6. Gate; 7. Baffle; 8. Control switch; 9. Cylinder; 10. Connecting air pipe; 11. Piston rod; 12. Mounting bracket; 13. Fixing bracket; 14. Guide rod; 15. Limiting block; 16. Alarm. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] Example 1: Please refer to Figure 1 - Figure 3 A light curtain verification device according to this embodiment includes a conveying mechanism 1. A first fence 2 is provided on one side of the conveying mechanism 1, and a second fence 3 is provided on the other side of the conveying mechanism 1. A light curtain transmitter 4 is fixedly connected to the inner side of the second fence 3, and a light curtain receiver 5 is fixedly connected to the inner side of the first fence 2. The positions of the light curtain transmitter 4 and the light curtain receiver 5 are corresponding. A control switch 8 is provided on the outer side of the first fence 2. The control switch 8 is electrically connected to an air pump. A connecting air pipe 10 is fixedly connected to the bottom of the air pump. A cylinder 9 is fixedly connected to one end of the connecting air pipe 10. A piston rod 11 is movably connected to one end of the cylinder 9. A baffle 7 is fixedly connected to one end of the piston rod 11. The baffle 7 is movably connected to one side of the light curtain receiver 5. Before starting the conveyor mechanism 1, the effectiveness of the light curtain system inside the first fence 2 and the second fence 3 needs to be verified. Specifically, the functions of the light curtain transmitter 4 and the light curtain receiver 5 need to be tested. The operation steps are as follows: The staff operates the control switch 8 outside the first fence 2 to send a start signal to the air pump. After the air pump starts, it supplies air to the cylinder 9 through the connecting air pipe 10. The cylinder 9 drives the piston rod 11 to extend. The piston rod 11 pushes the baffle 7 to move towards the light curtain receiver 5 until the baffle blocks the detection area of ​​the light curtain receiver 5. This allows the staff to observe whether the conveying mechanism 1 triggers an emergency stop in time. If the stop is rapid and stable, it indicates that the light curtain system is functioning normally. If the stop is not triggered or is delayed, it is necessary to check for faults in the light curtain transmitter 4, the light curtain receiver 5, and the control circuit. This allows the staff to verify the light curtain system from outside the fence. Furthermore, a mounting bracket 12 is fixedly connected to the inner side of the first fence 2, and the cylinder 9 is fixedly connected to one side of the mounting bracket 12. One end of the piston rod 11 passes through the interior of the mounting bracket 12. The mounting bracket 12 is installed on the inner side of the first fence 2 by bolts and fixing plates, so that the cylinder 9 is fixedly installed on the inner side of the first fence 2 by the mounting bracket 12, making the cylinder 9 firmly and reliably installed and adaptable to complex working conditions such as workshop vibration. Furthermore, a fixing frame 13 is fixedly connected to the outside of the first fence 2, and the control switch 8 is fixedly connected to one side of the fixing frame 13. The fixing frame 13 is installed on the outside of the first fence 2 by bolts and fixing plates, so that the control switch 8 is fixedly installed on the outside of the first fence 2 by the fixing frame 13, which makes it convenient for staff to verify the light curtain system outside the fence. Furthermore, one end of the baffle 7 is fixedly connected to a guide rod 14, and one end of the guide rod 14 is movably connected to the inside of the mounting frame 12. When the cylinder 9 pushes the baffle 7 to move through the piston rod 11, the baffle 7 will drive the guide rod 14 to move, and one end of the guide rod 14 will move along the inside of the mounting frame 12, thereby keeping the baffle 7 in a stable state when it moves. Furthermore, the other end of the guide rod 14 is fixedly connected to a limiting block 15. The limiting block 15 is located on one side of the mounting frame 12. By setting the limiting block 15, the limiting block 15 will limit the movement of the guide rod 14 and prevent one end of the guide rod 14 from leaving the interior of the mounting frame 12. Furthermore, an alarm 16 is installed on the top of the light curtain receiver 5. When there is a human body obstructing the light curtain transmitter 4 and the light curtain receiver 5, the conveyor mechanism 1 is triggered to stop in an emergency. At the same time, the alarm 16 emits a clear audible and visual alarm to quickly remind the staff of the abnormal location and facilitate timely handling.

[0019] Working principle: After the staff operates the control switch 8 on the outside of the first fence 2, the air pump starts and supplies air to the cylinder 9 through the connecting air pipe 10. The cylinder 9 drives the piston rod 11 to extend, and the piston rod 11 pushes the baffle 7 to move towards the light curtain receiver 5 until the baffle blocks the detection area of ​​the light curtain receiver 5. This allows the staff to observe whether the conveying mechanism 1 triggers an emergency stop in time. If the stop is rapid and stable, it indicates that the light curtain system is functioning normally. If the system does not stop or the stop is delayed, it is necessary to check for faults in the light curtain transmitter 4, the light curtain receiver 5, and the control circuit. This allows the staff to verify the light curtain system from outside the fence.

[0020] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A light curtain verification device, comprising a conveying mechanism (1), wherein a first fence (2) is provided on one side of the conveying mechanism (1), and a second fence (3) is provided on the other side of the conveying mechanism (1), characterized in that, A light curtain transmitter (4) is fixedly connected to the inner side of the second fence (3), and a light curtain receiver (5) is fixedly connected to the inner side of the first fence (2). The positions of the light curtain transmitter (4) and the light curtain receiver (5) are corresponding. A control switch (8) is provided on the outer side of the first fence (2). The control switch (8) is electrically connected to an air pump. A connecting air pipe (10) is fixedly connected to the bottom of the air pump. A cylinder (9) is fixedly connected to one end of the connecting air pipe (10). A piston rod (11) is movably connected to one end of the cylinder (9). A baffle (7) is fixedly connected to one end of the piston rod (11). The baffle (7) is movably connected to one side of the light curtain receiver (5).

2. The light curtain verification device according to claim 1, characterized in that, The first fence (2) is fixedly connected to the inner side of the mounting bracket (12), the cylinder (9) is fixedly connected to one side of the mounting bracket (12), and one end of the piston rod (11) passes through the interior of the mounting bracket (12).

3. The light curtain verification device according to claim 1, characterized in that, The first fence (2) is fixedly connected to a fixing frame (13) on the outside, and the control switch (8) is fixedly connected to one side of the fixing frame (13).

4. The light curtain verification device according to claim 1, characterized in that, One end of the baffle (7) is fixedly connected to a guide rod (14), and one end of the guide rod (14) is movably connected to the inside of the mounting bracket (12).

5. The light curtain verification device according to claim 4, characterized in that, The other end of the guide rod (14) is fixedly connected to a limiting block (15), which is located on one side of the mounting bracket (12).

6. The light curtain verification device according to claim 1, characterized in that, One end of the second fence (3) is hinged to a gate (6).

7. The light curtain verification device according to claim 1, characterized in that, An alarm (16) is installed on the top of the light curtain receiver (5).

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